Significantly enhanced energy storage performance in BiFeO3/BaTiO3/BiFeO3 sandwich-structured films through crystallinity regulation

2018 ◽  
Vol 20 (34) ◽  
pp. 21917-21924 ◽  
Author(s):  
Yafei Hou ◽  
Renlu Han ◽  
Weiping Li ◽  
Laihui Luo ◽  
Weidong Fei
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Rational Design ◽  
Discharge Energy ◽  
Storage Performance ◽  
Dielectric Contrast ◽  
Discharge Energy Density

By rational design of dielectric contrast, both excellent discharge energy density and efficiency could be simultaneously obtained in sandwich-structured films.

Greatly enhanced discharge energy density and efficiency of novel relaxation ferroelectric BNT–BKT-based ceramics

2020 ◽  
Vol 8 (2) ◽  
pp. 591-601 ◽  
Author(s):  
Di Hu ◽  
Zhongbin Pan ◽  
Xiang Zhang ◽  
Haoran Ye ◽  
Zhouyang He ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Efficiency ◽  
Energy Storage Density ◽  
Discharge Energy ◽  
Storage Density ◽  
Recoverable Energy ◽  
Discharge Energy Density

The 0.65(NBT-BKT)–0.35SBT ceramic possesses an ultra-high recoverable energy storage density (Wrec ∼ 4.06 J cm−3) and maintains a relatively high efficiency (η = ∼87.3%).

Achieving high discharge energy density and efficiency with NBT-based ceramics for application in capacitors

2019 ◽  
Vol 7 (14) ◽  
pp. 4072-4078 ◽  
Author(s):  
Zhongbin Pan ◽  
Di Hu ◽  
Yang Zhang ◽  
Jinjun Liu ◽  
Bo Shen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Efficiency ◽  
Energy Storage Density ◽  
Discharge Energy ◽  
Stored Energy ◽  
High Discharge ◽  
Storage Density ◽  
Recoverable Energy ◽  
Discharge Energy Density

The 0.94(BNT–BST)–0.06KNN ceramic possesses an excellent stored energy storage density (Ws = ∼3.13 J cm−3), a recoverable energy storage density (Wr = ∼2.65 J cm−3), and maintains a relatively high efficiency (η ∼ 84.6%).

scholarly journals Enhanced energy density of PVDF-based nanocomposites via a core–shell strategy

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
JingJing Xu ◽  
Chao Fu ◽  
Huiying Chu ◽  
Xianyou Wu ◽  
Zhongyang Tan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Breakdown Strength ◽  
Electric Displacement ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Discharge Energy ◽  
Discharge Energy Density

Abstract In recent years, high energy density polymer capacitors have attracted a lot of scientific interest due to their potential applications in advanced power systems and electronic devices. Here, core–shell structured TiO2@SrTiO3@polydamine nanowires (TiO2@SrTiO3@PDA NWs) were synthesized via a combination of surface conversion reaction and in-situ polymerization method, and then incorporated into the poly(vinylidene fluoride) (PVDF) matrix. Our results showed that a small amount of TiO2@SrTiO3@PDA NWs can simultaneously enhance the breakdown strength and electric displacement of nanocomposite (NC) films, resulting in improved energy storage capability. The 5 wt% TiO2@SrTiO3@PDA NWs/PVDF NC demonstrates 1.72 times higher maximum discharge energy density compared to pristine PVDF (10.34 J/cm3 at 198 MV/m vs. 6.01 J/cm3 at 170 MV/m). In addition, the NC with 5 wt% TiO2@SrTiO3@PDA NWs also demonstrates an excellent charge–discharge efficiency (69% at 198 MV/m). Enhanced energy storage performance is due to hierarchical interfacial polarization among their multiple interfaces, the large aspect ratio as well as surface modification of the TiO2@SrTiO3 NWs. The results of this study provide guidelines and a foundation for the preparation of the polymer NCs with an outstanding discharge energy density.

Largely enhanced energy storage capability of a polymer nanocomposite utilizing a core-satellite strategy

Nanoscale ◽  
2018 ◽  
Vol 10 (35) ◽  
pp. 16621-16629 ◽  
Author(s):  
Zhongbin Pan ◽  
Mingkun Wang ◽  
Jianwen Chen ◽  
Bo Shen ◽  
Jinjun Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
Polymer Nanocomposite ◽  
Nanocomposite Films ◽  
Discharge Energy ◽  
High Discharge ◽  
Fast Discharge ◽  
Discharge Efficiency ◽  
Discharge Energy Density

NN@PDA@Ag NWs/PVDF nanocomposite films exhibit an excellent discharge energy density of 16.04 J cm−3 at 485 MV m−1, high discharge efficiency of 62.8%, superior power density of 2.1 MW cm−3 and ultra-fast discharge speed of 153 ns.

scholarly journals Energy storage properties of surface-modified BaTiO3 ceramic films for multilayer capacitors applications

2019 ◽  
Vol 09 (03) ◽  
pp. 1950027
Author(s):  
Hongxian Wang ◽  
Chunyan Zeng ◽  
Baibo Liu ◽  
Xiaohui Wang
Keyword(s):  
Grain Size ◽  
Energy Storage ◽  
Energy Density ◽  
Breakdown Strength ◽  
Tape Casting ◽  
Discharge Energy ◽  
Ceramic Films ◽  
Average Grain Size ◽  
Surface Modified ◽  
Discharge Energy Density

Surface-modified BaTiO3 of 230[Formula: see text]nm average grain size were synthesized by coating BaTiO3 particles with 3[Formula: see text]wt.% Al2O3 and 1[Formula: see text]wt.% SiO2. Ceramic films of different thicknesses were prepared via tape casting and laminating processes followed by two-steps sintering method. After sintering, the average grain size of Surface-modified BaTiO3 ceramic slightly increased to 275[Formula: see text]nm, and great enhancement of AC breakdown strength (BDS) from 184[Formula: see text]kV/cm to 665[Formula: see text]kV/cm was obtained as the thickness of ceramic films decreased from 63[Formula: see text][Formula: see text]m to 12[Formula: see text][Formula: see text]m, resulting in improvement of discharge energy density from 1.14[Formula: see text]J/cm3to 4.06[Formula: see text]J/cm3. Because of their low-cost, easily fabrication, lead-free, improved AC BDS and discharge energy density, surface-modified BaTiO3 ceramic films appeared promising for applications in multilayer energy storage capacitors.

Novel barium titanate based capacitors with high energy density and fast discharge performance

2017 ◽  
Vol 5 (37) ◽  
pp. 19607-19612 ◽  
Author(s):  
Wen-Bo Li ◽  
Di Zhou ◽  
Li-Xia Pang ◽  
Ran Xu ◽  
Huan-Huan Guo
Keyword(s):  
Energy Efficiency ◽  
Energy Density ◽  
Breakdown Strength ◽  
High Energy ◽  
High Energy Density ◽  
Discharge Energy ◽  
Discharge Performance ◽  
Storage Performance ◽  
Fast Discharge ◽  
Discharge Energy Density

Novel BaTiO3-based capacitors show promising energy storage performance with high breakdown strength and discharge energy density and outstanding energy efficiency.

scholarly journals Development on Thermochemical Energy Storage Based on CaO-Based Materials: A Review

2018 ◽  
Vol 10 (8) ◽  
pp. 2660 ◽  
Author(s):  
Yi Yuan ◽  
Yingjie Li ◽  
Jianli Zhao
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Density ◽  
Circulating Fluidized Bed ◽  
High Energy ◽  
High Energy Density ◽  
Hydration Reaction ◽  
Initial Sample ◽  
Storage Performance ◽  
Low Activity

The intermittent and inconsistent nature of some renewable energy, such as solar and wind, means the corresponding plants are unable to operate continuously. Thermochemical energy storage (TES) is an essential way to solve this problem. Due to the advantages of cheap price, high energy density, and ease to scaling, CaO-based material is thought as one of the most promising storage mediums for TES. In this paper, TES based on various cycles, such as CaO/CaCO3 cycles, CaO/Ca(OH)2 cycles, and coupling of CaO/Ca(OH)2 and CaO/CaCO3 cycles, were reviewed. The energy storage performances of CaO-based materials, as well as the modification approaches to improve their performance, were critically reviewed. The natural CaO-based materials for CaO/Ca(OH)2 TES experienced the multiple hydration/dehydration cycles tend to suffer from severe sintering which leads to the low activity and structural stability. It is found that higher dehydration temperature, lower initial sample temperature of the hydration reaction, higher vapor pressure in the hydration reactor, and the use of circulating fluidized bed (CFB) reactors all can improve the energy storage performance of CaO-based materials. In addition, the energy storage performance of CaO-based materials for CaO/Ca(OH)2 TES can be effectively improved by the various modification methods. The additions of Al2O3, Na2Si3O7, and nanoparticles of nano-SiO2 can improve the structural stabilities of CaO-based materials, while the addition of LiOH can improve the reactivities of CaO-based materials. This paper is devoted to a critical review on the development on thermochemical energy storage based on CaO-based materials in the recent years.

High-performance capacitors based on NaNbO3 nanowires/poly(vinylidene fluoride) nanocomposites

2018 ◽  
Vol 6 (30) ◽  
pp. 14614-14622 ◽  
Author(s):  
Zhongbin Pan ◽  
Lingmin Yao ◽  
Guanglong Ge ◽  
Bo Shen ◽  
Jiwei Zhai
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Nanocomposite Films ◽  
Discharge Energy ◽  
High Discharge ◽  
Fast Discharge ◽  
Poly Vinylidene Fluoride ◽  
Discharge Energy Density

Nanocomposite films loaded with small NaNbO3 nanowires exhibit a high discharge energy density of 12.26 J cm−3 at 410 MV m−1, superior power density of 2.01 MW cm−3, and ultra-fast discharge speed of 146 ns.

Significantly enhanced energy storage performance of flexible composites using sodium bismuth titanate based lead-free fillers

2020 ◽  
Vol 8 (42) ◽  
pp. 14910-14918
Author(s):  
Pingan Yang ◽  
Lili Li ◽  
Hongbin Yuan ◽  
Fei Wen ◽  
Peng Zheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Bismuth Titanate ◽  
High Energy ◽  
High Energy Density ◽  
Lead Free ◽  
Sodium Bismuth Titanate ◽  
Flexible Composites ◽  
Storage Performance

A new lead-free antiferroelectric ceramic NBT–SBT was introduced into PVDF polymer to fabricate composites films, achieving record-high energy density of 15.3 J cm−3 at 500 MV m−1 and meeting the requirement of miniaturization and lightweight device.

Energy storage performance of ferroelectric ZrO2 film capacitors: effect of HfO2:Al2O3 dielectric insert layer

2020 ◽  
Vol 8 (28) ◽  
pp. 14171-14177
Author(s):  
J. P. B. Silva ◽  
J. M. B. Silva ◽  
K. C. Sekhar ◽  
H. Palneedi ◽  
M. C. Istrate ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Zro2 Film ◽  
Storage Performance

High energy density of 54.3 J cm−3 with an efficiency of 51.3% was obtained for the ZrO2 film capacitors with 2 nm-thick HAO insert layer.

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